Aqueous Solutions : Question Preview (ID: 9182)

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Which of the following is a substance whose water solution conducts electricity?
a) carbon tertrachloride
b) Silicon dioxide
c) Magnesium chloride
d) Silver

Which of the following increases the rate of dissolving a solid in water?
a) using larger pieces of solid
b) crushing the solid
c) decreasing the temperature
d) let it sit still (no stirring)

As temperature increases, the solubility of solids ___________ while the solubility of gases ____________
a) increases, decreases
b) decreases, increases
c) decreases, decreases
d) increases, increases

How many moles of ions are produced from the dissociation of 1 mol of Fe2(SO4)3
a) 2
b) 4
c) 5
d) 6

Which of the following shows the dissociation of NaCl (s)
a) Na + Cl => NaCl
b) Na+1 + Cl-1 => NaCl
c) NaCl => Na + Cl
d) NaCl => Na+1 + Cl-1

When solutions of NaOH and Ba(NO3)2 are combined, what precipitate forms?
a) Barium Nitrate
b) Sodium Nitrate
c) Sodium Hydroxide
d) Barium Hydroxide

What is the boiling point elevation of a 0.7 molal solution of aqueous MgBr2 (Kb = 0.51 C/m)
a) 0.357 C
b) 1.071 C
c) 100.357 C
d) 101.071 C

What is the freezing point depression of a 0.06 sugar solution dissolved in water (Kf= -1.86 m/C)
a) --0.1116 C
b) --0.3348 C
c) --1.0044 C
d) -2.009 C

In the following equation: AgNO3(aq) + NaCl(aq) => what is the formula of the precipitate that is formed?
a) NaNO3
b) AgCl
c) Na(NO3)2
d) AgCl2

What is the balanced net ionic equation for the formation of PbCl2?
a) Pb(aq) + Cl(aq) => PbCl2(s)
b) Pb+2(aq) + Cl-1(aq) => PbCl2(s)
c) Pb(aq) + 2Cl(aq) => PbCl2(s)
d) Pb+2(aq) + 2Cl-1(aq) => PbCl2(s)

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